2019 Mack Granite (gu) Recall: Snow plow headlights can be turned on without other exterior lights, and…
NHTSA campaign 18V765000 · Exterior Lighting · filed Oct 30, 2018 · verified Jul 30, 2026
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Granite (GU) vehicles equipped with snow plow lamp preparation kits. The snow plow headlights can be turned on without other exterior lights, and high beam indicator will not work when the snow plow high beams are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
The risk
The driver may operate the vehicle with the snow plow headlights on but the marker and tail lamps off, reducing the vehicle's visibility and increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Mack will notify owners, and dealers will update the software related to the plow lights, free of charge. The recall began December 19, 2018. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0414.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mack | Granite (gu) | 2019 |
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Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 18V765000 (manufacturer number SC0414). Data last verified Jul 30, 2026.